Longitudinal and transverse magnetoresistance in films with tilted out-of-plane magnetic anisotropy

Abstract

Tilted off-plane magnetic anisotropy induces two unusual characteristic magnetotransport phenomena: extraordinary Hall effect in the presence of an in-plane magnetic field, and non-monotonic anisotropic magnetoresistance in the presence of a field normal to the sample plane. We show experimentally that these effects are generic, appearing in multiple ferromagnetic systems with tilted anisotropy introduced either by oblique deposition from a single source or in binary systems co-deposited from separate sources. We present a theoretical model demonstrating that these observations are natural results of the standard extraordinary Hall effect and anisotropic magnetoresistance, when the titled anisotropy is properly accounted for. Such a scenario may help explaining various previous intriguing measurements by other groups.

21 single column pages + 9 figures; v2: published version

References in corpus (1)

• Absence of the Ordinary and Extraordinary Hall effects scaling in granular ferromagnets at metal-insulator transition

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• Experimental determination of the orientation of tilted magnetic anisotropy by measuring Hall voltage
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